<template>
<div>
  <!--      面包屑导航区域-->
  <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>数据统计</el-breadcrumb-item>
    <el-breadcrumb-item>数据报表</el-breadcrumb-item>
  </el-breadcrumb>

<!--  卡片视图区域-->
  <el-card>
    <!-- 2.为 ECharts 准备一个具备大小（宽高）的 DOM -->
    <div id="main" style="width: 750px;height:400px;"></div>
  </el-card>
</div>
</template>

<script>
  //1.导入echarts
  import echarts from 'echarts'

  import _ from 'lodash'

  export default {
    name: 'report',
    data(){
      return {
        //需要合并的对象
        options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
      }
    },
    created(){},
    //此时页面上的dom元素都已经被渲染完毕
    async mounted(){
      // 3.基于准备好的dom，初始化echarts实例
      var myChart = echarts.init(document.getElementById('main'));

      const {data:res} = await this.$http.get('reports/type/1')
      if(res.meta.status!==200){
        return this.$message.error('获取数据失败')
      }


      //4.准备数据和配置项

      const info = _.merge(res.data,this.options)


      //5.展示数据
      // 使用刚指定的配置项和数据显示图表。
      myChart.setOption(info);
    },
    methods:{}
  }
</script>

<style lang="less" scoped>

</style>
